[ewg] Re: [ofa-general] Build failures on current 1.4.1 dailies

[Amir Vadai]

Hi,

Actually, from preliminary tests SDP should work with 2.6.29 kernel. It 
isn't fully tested - but it should work.

- Amir

On 05/10/2009 10:29 AM, Gennadiy Nerubayev wrote:
> On Sun, May 10, 2009 at 2:10 AM, Or Gerlitz <ogerlitz at voltaire.com
> <mailto:ogerlitz at voltaire.com>> wrote:
>
>     Gennadiy Nerubayev wrote:
>
>         Well, I need a recent-ish vanilla kernel due to some performance
>         advantages over stock redhat in some usage scenarios. OFED goes
>         on top of that because of the ease of installation and use.I
>         know I can install and use some of the userspace ofed stuff
>         (opensm, utils, management, libs, etc) along with the in-kernel
>         infinband stack on 2.6.29.1, but even that does not include the
>         whole picture compared to full ofed. Simple stuff still needs to
>         be added for it to be functional, such as 90-ib.rules which is
>         part of the ofa_kernel rpm package; but I digress.
>
>     You mentioned redhat, so you could use the IB stack provided by the
>     distro and just replace the kernel. This IB stack has all the
>     components you have mentioned.
>
>
> Upgrading the kernel would break ofa_kernel functionality though, so
> core components would no longer work. Which is why I'd need to use the
> stack inside the kernel, then use the userspace from ofed. Somewhat
> unrelated, but the other component that I need is latest scst/ib_srpt,
> which does not yet build very nicely against ofa_kernel.
>
>     Also, this may sound dumb, but where do I get the support for SDP
>     with in-kernel stack? I can build the libsdp stuff in ofed, but the
>     actual module appears to be ofa_kernel only?
>
>     sdp was never submitted upstream... do you use it?
>
>
> Doh. I don't currently use it, but I'll need it relatively soon for a
> particular application. I can see that I can build rdma/nfs in vanilla
> kernel which takes care of the build failure that I mentioned earlier.
> However, without sdp in upstream it's going to be a choice of either
> older kernel with ofa_kernel and sdp but no ib_srpt from scst, or newer
> kernel with ib_srpt from scst but no sdp. I know that there's some
> progress on scst portion to get ib_srpt to compile properly against
> current ofa_kernel, but having the alternate option of sdp in upstream
> would be great as well... is there a particular reason why it wasn't
> submitted?
>
> In any case, I'd love to have my cake and eat it too :p
>
> -Gennadiy
>
>
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-- 
Amir Vadai
Software Eng.
Mellanox Technologies
mailto: amirv at mellanox.co.il
Tel +972-3-6259539